Qld govt to investigate Adani bores

Queensland authorities are investigating reports Indian mining giant Adani has drilled a number of bores at its controversial Carmichael coal mine without proper approval.

Environmental group Coast and Country has made public high resolution satellite and drone pictures which it says shows the bores, which they say threaten the integrity of the Great Artesian Basin at a time when half the country is in drought.

Adani claims the bores are to take geological samples and monitor groundwater as allowed under their current approval, however the environment department says the bores weren't in place at their last inspection.